*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001010
Feb001034
Mar007007
Apr01547300488
May2106704630011135
Jun8214192640021691
Jul34778321840010001
Aug1471460001481
Sep032672002675
Oct1382900833
Nov01210022
Dec001003949
Total5939901838405248396